Abstract

The effect of iron and lead that added to Al-13%Si alloy on the phases, friction
and wear characteristics were studied. All friction and wear test specimens were dry
slided on the carbon steel disc at a wide range of different bearing pressures (3.74-
187.3 Nm-2 x 103). XRD patterns analysis showed that there are three phases presented
in the matrix of Al-13%Si alloy after iron and lead addition. These phases are eutectic,
lead and Fe2Si2Al9. While two phases were presented in the matrix of Al-13%Si alloy
which are eutectic and primary silicon. The results also showed that coefficient of
friction and wear rate were increased with iron and lead addition in a magnitude
dependent on the bearing pressure. Furthermore, wear mechanisms were dependent on
the alloy phases, hardness and bearing pressure.